"Polygons in Life" PPT courseware

Description

"Polygons in Life" PPT courseware

Review points for this unit

Area formula and its applications

Derivation of area formula

Area unit conversion

Develop spatial concepts

solve the real problem

Area of ​​rectangle = length × width

Area of ​​a square = side length × side length

Area of ​​parallelogram = base × height

Area of ​​triangle = base × height ÷ 2

Area of ​​trapezoid = (upper base + lower base) × height ÷ 2

A parallelogram can be assembled into a rectangle by passing ( ).

① Cutting and trimming, translation

②Rotation and translation

③Cut and rotate

Put two identical triangles on top of each other to form a parallelogram using ( ).

① Cutting and trimming, translation

②Rotation and translation

③Cut and rotate

Put two identical trapezoids on top of each other to form a parallelogram through ( ).

① Cutting and trimming, translation

②Rotation and translation

③Cut and rotate

choose:

It is a parallelogram with a base and height of 100 meters and covers an area of ​​1 ( ).

① Square kilometers

②ha

③square meters

Correct statement:

If the base and height of a triangle and a parallelogram are equal respectively, then the area of ​​the triangle is half the area of ​​the parallelogram.

fill in the blank

The area of ​​a parallelogram is 40 square centimeters, and the area of ​​a triangle with the same base and height as it is ( ) square centimeters.

Thinking questions

1. In the picture below, the area of ​​the red part is compared with the area of ​​the yellow part ( ).

①The yellow part is large in area

②The red part is large in area

③The same size

④Not sure

2. If the base of a triangle and the base of a parallelogram are equal and their areas are equal, and the height of the parallelogram is 10 cm, what is the height of the triangle?

Keywords: Polygon teaching courseware in life, Qingdao version fifth grade mathematics volume PPT courseware download, fifth grade mathematics slide courseware download, Polygon in life PPT courseware download, .PPT format;

For more information about the "Polygons in Life" PPT courseware, please click on the "Polygons in Life" ppt tab.

"Polygons in Life" PPT courseware 4:

"Polygons in Life" PPT courseware 4 The area of ​​a trapezoid Review the method of deriving the area of ​​a triangle Because: S=ah So: S=ah2 What did you find? A rectangle can be cut into two trapezoids along a straight line. A parallelogram can be cut into two along a straight line..

"Polygons in Life" PPT courseware 3:

"Polygons in Life" PPT Courseware 3 Review 1: Find the area of ​​the following figures: Area of ​​parallelogram = Height of base = 20 8 =160 (square centimeters) Area of ​​rectangle = Length and width = 124.5 = 54 (square decimeters) Area of ​​square = side length side length =..

"Polygons in Life" PPT courseware 2:

"Polygons in Life" PPT courseware 2 The area of ​​a rectangle = length X width The area of ​​a square = side length X side length What is a parallelogram? Indicate its base and height. Characteristics of a parallelogram ① Opposite sides are parallel and equal ② Opposite angles are equal ... ... ... Parallelogram...

File Info

Update Time: 2024-09-01

This template belongs to Mathematics courseware Qingdao Edition Fifth Grade Mathematics Volume 1 industry PPT template

Preview